import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css'// progress bar style
import { getToken } from '@/utils/auth' // getToken from cookie

NProgress.configure({ showSpinner: false })// NProgress Configuration

// permissiom judge function
function hasPermission(roles, permissionRoles) {
  if (roles.indexOf('admin') >= 0) return true // admin permission passed directly
  if (!permissionRoles) return true
  return roles.some(role => permissionRoles.indexOf(role) >= 0)
}

function hasAuthority(permission, router) {
  let str = router.slice(1)
  str = str.replace(/\//g, '_')
  for (var key in permission) {
    if (key == str || (str.indexOf(key) == 0)) { // 健值相等，或者健值为包含关系
      if (permission[key].length == 0) {
        return false
      } else {
        return true
      }
    }
  }
  return true
}

const whiteList = ['/login', '/authredirect']// no redirect whitelist

router.beforeEach((to, from, next) => {
  NProgress.start() // start progress bar
  if (getToken()) { // determine if there has token
    /* has token*/
    if (to.path === '/login') {
      next({ path: '/' })
      NProgress.done() // if current page is dashboard will not trigger	afterEach hook, so manually handle it
    } else {
      if (store.getters.roles.length === 0) { // 判断当前用户是否已拉取完user_info信息
        store.dispatch('GetUserInfo').then(res => { // 拉取user_info
          const roles = res.data.roles // note: roles must be a array! such as: ['editor','develop']
          // let staff = res.data.staff != null && res.data.staff != undefined ? res.data.staff : 0;
          // let permission = res.data.permission != null && res.data.permission != undefined ? res.data.permission : [];
          store.dispatch('GenerateRoutes', { roles }).then(() => { // store.dispatch('GenerateRoutes', { roles, staff, permission }).then(() => { //根据roles权限生成可访问的路由表
            router.addRoutes(store.getters.addRouters) // 动态添加可访问路由表
            next({ ...to, replace: true }) // hack方法 确保addRoutes已完成 ,set the replace: true so the navigation will not leave a history record
          })
        }).catch(() => {
          store.dispatch('FedLogOut').then(() => {
            Message.error('验证失败, 请重新登录')
            next({ path: '/login' })
          })
        })
      } else {
        // 没有动态改变权限的需求可直接next() 删除下方权限判断 ↓
        if (hasPermission(store.getters.roles, to.meta.roles)) {
          if (hasAuthority(store.getters.permission, to.path)) {
            next()
          } else {
            /* next()
            next({ path: '/401', replace: true, query: { noGoBack: true }})*/
            const time = (new Date()).getTime()
            let p = { path: '/authority/index', replace: true, query: { time: time }}
            next(p)
            // next({ path: '/authority/index', replace: true })
          }
          // next({ path: '/401', replace: true, query: { noGoBack: true }})
        } else {
          // next({ path: '/authority/index', replace: true })//
          next({ path: '/401', replace: true, query: { noGoBack: true }})
        }
        // 可删 ↑
      }
    }
  } else {
    /* has no token*/
    if (whiteList.indexOf(to.path) !== -1) { // 在免登录白名单，直接进入
      next()
    } else {
      next('/login') // 否则全部重定向到登录页
      NProgress.done() // if current page is login will not trigger afterEach hook, so manually handle it
    }
  }
})

router.afterEach(() => {
  NProgress.done() // finish progress bar
})
